Evaluate

$205 \times 195$

Evaluate

$(1002)^{2}$

Factorise :

$a^{3}-8 b^{3}-64 c^{3}-24 a b c$

Find the zero of the polynomial in each of the following cases

$p(t)=7 t-21$

Classify the following as linear, quadratic or cubic polynomial

$x^{3}+2 x^{2}+3 x+2$

Factorise

$25 x^{2}+25 x+6$